{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43013",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:55.974Z",
        "datePublished": "2026-05-01T14:15:18.907Z",
        "dateUpdated": "2026-05-11T22:16:00.983Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:16:00.983Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: lag: Check for LAG device before creating debugfs\n\n__mlx5_lag_dev_add_mdev() may return 0 (success) even when an error\noccurs that is handled gracefully. Consequently, the initialization\nflow proceeds to call mlx5_ldev_add_debugfs() even when there is no\nvalid LAG context.\n\nmlx5_ldev_add_debugfs() blindly created the debugfs directory and\nattributes. This exposed interfaces (like the members file) that rely on\na valid ldev pointer, leading to potential NULL pointer dereferences if\naccessed when ldev is NULL.\n\nAdd a check to verify that mlx5_lag_dev(dev) returns a valid pointer\nbefore attempting to create the debugfs entries."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/mellanox/mlx5/core/lag/debugfs.c"
                    ],
                    "versions": [
                        {
                            "version": "7f46a0b7327ae261f9981888708dbca22c283900",
                            "lessThan": "a3db46d5f4df92630a96f7bc77b60e75c2353e06",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7f46a0b7327ae261f9981888708dbca22c283900",
                            "lessThan": "7129632cab3e4d23510b21930aa73b8d97a859f5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7f46a0b7327ae261f9981888708dbca22c283900",
                            "lessThan": "cfa774e6c920c81e700327bf10db8cb50d5db456",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7f46a0b7327ae261f9981888708dbca22c283900",
                            "lessThan": "c53cf44588a93000f71817a6bb87a66353c48dee",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7f46a0b7327ae261f9981888708dbca22c283900",
                            "lessThan": "89c65f2fcd8801365b410f40a427cbcd7f4c28e9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7f46a0b7327ae261f9981888708dbca22c283900",
                            "lessThan": "bf16bca6653679d8a514d6c1c5a2c67065033f14",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/mellanox/mlx5/core/lag/debugfs.c"
                    ],
                    "versions": [
                        {
                            "version": "5.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.168",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.134",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.81",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.22",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.12",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.1.168"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.6.134"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.12.81"
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.18.22"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.19.12"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
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                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/a3db46d5f4df92630a96f7bc77b60e75c2353e06"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7129632cab3e4d23510b21930aa73b8d97a859f5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cfa774e6c920c81e700327bf10db8cb50d5db456"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c53cf44588a93000f71817a6bb87a66353c48dee"
                },
                {
                    "url": "https://git.kernel.org/stable/c/89c65f2fcd8801365b410f40a427cbcd7f4c28e9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bf16bca6653679d8a514d6c1c5a2c67065033f14"
                }
            ],
            "title": "net/mlx5: lag: Check for LAG device before creating debugfs",
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                "engine": "bippy-1.2.0"
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}